Method for making N-substituted nitrophthalimides

Patent 4902809 Issued on February 20, 1990. Estimated Expiration Date:

February 20, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3415876

3868389

3920697

Process for making N-methyl nitrophthalimides
Patent #: 3933852
Issued on: 01/20/1976
Inventor: Cook , et al.

Process for making dinitrotoluene
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Inventor: Cook , et al.

Method for making n-alkylphthalimides
Patent #: 4020089
Issued on: 04/26/1977
Inventor: Markezich

Process for the production of nitro derivatives of aromatic compounds
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Issued on: 07/19/1977
Inventor: Vogel , et al.

Process for the production of aromatic mononitro compounds
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Inventor: Thelen , et al.

Process for the preparation of mononitro-aromatic compounds
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Destruction of DNPI in an all nitric acid nitration process Patent #: 4599429
Issued on: 07/08/1986
Inventor: Odle

Inventors

Application

No. 917926 filed on 10/10/1986

US Classes:

548/481Chalcogen or nitrogen attached indirectly to ring carbon of the bicyclo ring system by acyclic nonionic bonding

Examiners

Primary: Ceperley, Mary E.

Attorney, Agent or Firm

Bernard, Rothwell & Brown

Foreign Patent References

0108604 EP. 05/13/1984
2270247 FR. 12/13/1975
329367 CH. 06/13/2012
635635 GB. 04/13/2012

International Class

C07D 209/48

Abstract

A process for preparing N-alkyl substituted nitrophthalimide by the nitration of N-alkyl substituted phthalimide using only nitric acid, said nitric acid having a concentration of at least about 95%, and then recovering N-alkyl nitrophthalimide from the nitric acid solution.

Other References

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